Special attention is drawn to those features by which wcdma differs from gsm and is95. Test measurement challenges and field environment test planning school of electrical engineering master. Wcdma system standardization, interfaces and power control. The training presents functionality related with the use of r99 dedicated channels, as well as, hspa. Spreading and scrambling transport channel combining soft handover compressed mode power control. Cellular mobile communication systems may 16, 2006 niclas wiberg, ericsson research. Difference between wcdma and lte compare the difference.
Fma2 is a singlecarrier wideband cdma solution using a. The wcdma technology provides the umts system some of the new functionalities on the air interface. In addition to wcdma, the other air interfaces that can be used to provide third generation. Lowest layer in this interface is physical layer, phy. Nokia siemens networks lte 1800 mhz introducing lte with. Wcdma, radio network controller, handover, troubleshooting.
The lte air interface is well scalable in terms of bandwidth. Gsm europe and large parts of the world, cdmaone americas, damps americas, and. Korean standardization efforts were later moved to 3gpp and 3gpp2 to contribute to wcdma. It is also known as the air interface or the radio link. In fact, the majority of the 3g systems in operation employ cdma, while the rest use time division multiple access tdma. It describes the concept of spreading and despreading followed by a presentation of the multipath radio channel and rake receiver. Csempro telecom, ericsson, france telecom, nokia, siemens and of several university partners. Wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode.
In the uncoordinated case it is 3gpp recommended practice that the center. In umts, in addition to channelisation, codes are used for synchronisation and scrambling. Enlzt 123 7279 r4a 7 wcdma air interface intentionally blank 8. The chapter also discusses other key elements of the wcdma air interface such as power control and soft and softer handovers. Although wcdma is designed to operate on evolved gsm core networks, it uses code division multiple access cdma for its air interface. Pdf wcdma air interface student book lzt 123 7279 r4a. Hspa high speed packet access is a collection of mobile telephony. Gsm tutorial gsm is a globally accepted standard for digital cellular communications. Wcdma air interface as well as wcdma the other air interfaces that can be used are edge and cdma2000. Wcdma wideband code division multiple access and lte long term evolution are mobile communication technologies that falls under the 3rd generation partnership project 3gpp releases.
Umts wcdma is a direct sequence cdma system where user data is multiplied with quasirandom bits derived from wcdma spreading codes. Handover between lte and 3g radio access technologies. Pdf wcdma system standardization, interfaces and power. The chapter introduces the main parameters of the wcdma physical layer. Gsm gprs umts radio network controller radio network controller voice data telcom 2720 wcdma wideband code division multiple access wcdma the air radio interface standard for umts wideband direct sequence spread spectrum variable orthogonal spreading for multiple access ovsf three types of interface. Layer 2 consists of medium access control mac radio link control rlc the broadcast multicast control bmc packet data convergence protocol pdcp 3. Lucent technologies proprietary 1 wcdma air interface fundamentals prepared by.
Advanced baseband technology in thirdgeneration radio. The ms and the bss communicate across the um interface. The participants should be familiar with the operation of both ericsson wcdma radio and transport networks. Wcdma air interface fundamentals telecommunications.
Wcdma air interface error detection and correction. The term wcdma also refers to one of the itus imt2000 standards, a type of 3g cellular network. The wcdma specification has been created in 3gpp the 3 rd generation partnership project, which is the joint standardization project from europe, japan, korea, the usa and china. It supports conventional cellular voice, text and mms services, but can also carry data at high speeds, allowing mobile operators to deliver higher bandwidth. Enhancing packet data access in wcdma 173 addition, lower layer control information, e. The bss communicates with the network service switching nss center across the a interface. The physical layer has interface to both mac and rrc sublayer. Concentrating on three mobile communication technologies, gsm, 3g wcdma, and ltewhile majorly focusing on radio access network ran technologythis book describes principles of mobile radio. The iucs, iups, iub, and iur interfaces are implemented on the atm network. Ericsson assumes no legal responsibility for any error or damage resulting from the. The gsm air interface is described here, first in general terms, examining the channels used by the mobile and the network to establish communications, then with increasing detail, the procedures and messages exchanged. View and download ericsson wcdmahsdpa user manual online. Each element and air interface of the utran is briefly discussed. Umts physical layer signal format one of the chief elements of the umts physical layer or radio interface is the signal format that has been adopted.
Summarizes and surveys current lte technical specifications and implementation options for engineers and newly qualified support staff. It presents the results from field capacity trials. Fixed wireless terminal for wcdma hsdpa mobile networks. Recent years have witnessed the rapid progress in handheld devices. The tta1 and tta2 air interface proposals later renamed global cdma 1 and 2 were based on synchronous and asynchronous wideband cdma technologies respectively.
Wcdma ran w15 protocols and procedures 5 days, lzu1089950. It is a complete set of specifications in which a detailed protocol defines how a mobile phone communicates with the base station or nodeb. The conclusion was that both the wcdma and the wb tdmacdma. The majority of these will be served by wcdmahspa and lte. At the end of 1999, ericsson had seventeen wcdma test systems in operation in asia, europe and north america. The chapter, also presents the wcdma air interface capacity, which is limited by interference. Wcdma is the most widely adopted air interface standard for third generation 3g mobile networks. Wcdma air interface course gives the detailed description of the wcdma fdd technology and its use in the umts network. Wide band cdma technology was selected to for utran air interface. Lte standards are part of the latest 3gpp releases, which are considered as 4th generation 4g, and wcdma is the older technology which was specified as 3rd. An rnc may connect to several rncs through the iur interface. Introduction to wcdma wcdma for umts wiley online library. Wcdma technology has emerged as the most widely adopted third generation air interface.
As an ofdma technology lte assumes small nominal guard band 10 %, excluding 1. This chapter introduces the principles of the wcdma air interface. This has resulted in a growing number of mobile phones or pdas that have a builtin camera. It is also difficult to jam because its energy is spread over so wide a. Lucent technologies proprietary 2 objectives describe the requirements and drivers behinds the wcdma air interface. For other wideband cdma proposals it can be written as w zeon pdf driver trialcdma. Umtstdd is a mobile standard built upon the umts 3g standard, using a tdcdma, tdscdma, or other 3gppapproved, air interface that uses time division duppg lexing tdd. Idealy they should have attended the following courses. Fma2 is a singlecarrier wideband cdma solution using a 4. Wcdma and lte synchronization aspects chronos technology. Ericsson wcdma hsdpa touch terminals pdf manual download. Spreading wcdma channels physical layer functions spreading.
The training focuses on physical layer operation and procedures and other functions closely related with the physical layer. Spreading means increasing the bandwidth of the signal. The control information is only relevant for the ues about to receive the. Wideband code division multiple access, along with umtsfdd, utrafdd, or imt2000 cdma direct spread is an air interface standard found in 3g mobile telecommunications networks. Every rnc is connected to sgsn through the iups interface, and to an msc through the iucs interface. What is wideband code division multiple access wcdma. The same air interface wcdma is to be used in europe and asia including japan and korea using the frequency bands around 2 ghz. The operator license can be shared highly efficiently between lte and gsm portions with the rf sharing solution. Pdf wcdma system standardization, interfaces and power control. The new rf interface and physical layer provided many advantages over that used for gsm, enabling higher data speeds and a general improvement in performance. Baseband 52165212 handling 3 days, lzu1082172 wcdma ran evoc 8200 troubleshooting 3 days, lzu1089165. Nokia, siemens, ericsson, france telecom, csempro telecom. The importance of capacity will increase after the initial coverage deployment when the amount of traffic increases.
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